Conidia on conidiophoresChain of conidia of AlternariaConidiomata of Cypress canker (probably Seiridium cardinale) erupting on a Thuja twig
A conidium (/kəˈnɪdiəm,koʊ-/kə-NID-ee-əm, koh-; pl.: conidia), sometimes termed an asexual chlamydospore or chlamydoconidium (pl.: chlamydoconidia),[1] is an asexual,[2] non-motile spore of a fungus. The word conidium comes from the Ancient Greek word for dust, κόνις (kónis).[3] They are also called mitospores due to the way they are generated through the cellular process of mitosis.[citation needed] They are produced exogenously. The two new haploid cells are genetically identical to the haploid parent, and can develop into new organisms if conditions are favorable, and serve in biological dispersal.
Asexual reproduction in ascomycetes (the phylum Ascomycota) is by the formation of conidia, which are borne on specialized stalks called conidiophores. The morphology of these specialized conidiophores is often distinctive between species and, before the development of molecular techniques at the end of the 20th century, was widely used for identification of (e.g.Metarhizium) species.
The terms microconidia and macroconidia are sometimes used.[4]
^Jansonius, D.C., Gregor, Me., 1996. Palynology: principles and applications. American association of stratigraphic palynologists foundation.[page needed]
^Osherov, Nir; May, Gregory S (2001). "The molecular mechanisms of conidial germination". FEMS Microbiology Letters. 199 (2): 153–60. doi:10.1111/j.1574-6968.2001.tb10667.x. PMID 11377860.
^Ohara, T.; Inoue, I; Namiki, F; Kunoh, H; Tsuge, T (2004). "REN1 is Required for Development of Microconidia and Macroconidia, but Not of Chlamydospores, in the Plant Pathogenic Fungus Fusarium oxysporum". Genetics. 166 (1): 113–24. doi:10.1534/genetics.166.1.113. PMC 1470687. PMID 15020411.
A conidium (/kəˈnɪdiəm, koʊ-/ kə-NID-ee-əm, koh-; pl.: conidia), sometimes termed an asexual chlamydospore or chlamydoconidium (pl.: chlamydoconidia),...
conidium production, the conidiogenous cell elongates before producing another conidium atop a small denticle (a narrow projection bearing a conidium...
various stages of the shot hole disease: brown spots on the leaf with conidium holders in the middle (center) that eventually fall off, leaving BB-sized...
indistinguishable from vegetative hyphae until production of the first conidium. Conidium development is distinctive and was first described by Ingold in 1956...
have arisen independently many times just within the Agaricales. Ascocarp Conidium "MykoWeb: Evolution & Morphology in the Homobasidiomycetes". www.mykoweb...
endospores that cause a pyogenic (pus-causing) inflammation. Fungi portal Conidium Sun SH, Sekhon SS, Huppert M (1979). "Electron microscopic studies of saprobic...
a macroconidium through the surface of a honeydew drop and a secondary conidium of an oval to pearlike shape is formed, to which the contents of the original...
members of the zygomycete order Entomophthorales. The evolution of the conidium from the sporangiospore is the main defining difference between zygomycetes...
(Sorghastrum nutans). Presence of a unique filiform appendage at the apex of the conidium is the distinctive morphological character. Jo Anne Crouch (2014)Colletotrichum...
dendritic cell A well-resolved dendritic cell drags a conidium through a distance of up to 9 μm. The conidium, however, is not phagocytosed by the cell. The...
affects sapling graftings in nurseries. Coryneum perniciosum, one of the two conidium-like side forms of this fungus, occurs on all decayed, ligneous parts of...
which conidiophores arise. These penetrate to the exterior and a single conidium forms, ready for dispersal. The colourless conidia are substantially longer...
0 μm. The conidia are formed in branching chains in which the youngest conidium is situated at the top. Cladosporium sphaerospermum also produces ramoconidia...
triggered by rainfall, or even just a sudden drop in humidity. When the conidium lands on a leaf, it will wait until the nighttime dew, and then germinate...
their sizes ranging from 15–30 × 4–6 μm. At the distal end of each metula, conidium-bearing structures called phialides form. Phialides can range in shape...
resting nearby. If no hosts are available for infection, a smaller secondary conidium may develop. Once on a fly, the conidia germinate within a few hours and...
cycle is initiated (i.e. fertilization occurs) when a cell (usually a conidium) of opposite mating type contacts a part of the trichogyne (see Figure)...
temperature, relative humidity, leaf wetness and leaf age on Spilocaea oleagina conidium germination on olive leaves". European Journal of Plant Pathology. 120...
inside the sporangium which is a spore sac. Conidia Conidia (singular: conidium) are spores produced at the tip of special branches called conidiophores...
ochratoxin. It has an unfunctional PKS gene (pksA) for the production of black conidium pigment, which makes it the only species in the Nigri section which is...
cycle is initiated (i.e. fertilization occurs) when a cell, usually a conidium, of opposite mating type contacts a part of the trichogyne (see Figure)...
infect free living amoeba. Infection begins when a conidium comes in contact with an amoeba. The conidium produces a penetration tube to invade the host and...
optimally at pH 6 but tolerates environments with a pH as low as 4.4. Conidium production is higher in wet than dry conditions. The production of spores...
third[clarification needed] cell) at one end (the pore[clarification needed] end of the conidium). Curvularia can be distinguished from the species Bipolaris and Drechslera...
the apex and along the sides; e.g. conidia of Trichothecium. adiaspore Conidium of Emmonsia parva. A large spore that increases notably in size, but does...
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